Drill chuck



FIG. 1 is a perspective view of a drill chuck embodying the design of the present invention;

FIG. 2 is a front elevation view of the drill chuck illustrated in FIG. 1;

FIG. 3 is a back elevation view of the drill chuck shown in FIG. 1;

FIG. 4 is a left side view of the drill chuck shown in FIG. 1;

FIG. 5 is a right side view of the drill chuck shown in FIG. 1;

FIG. 6 is a top view of the drill chuck illustrated in FIG. 1; and,

FIG. 7 is a bottom view of the drill chuck illustrated in FIG. 1.

Broken lines are for illustrative purposes only and form no part of the claim. 

The ornamental design for a drill chuck, substantially as shown and described. 